Vaxart (VXRT) Short Interest Ratio & Short Volume $0.39 +0.02 (+6.38%) As of 03:59 PM Eastern Add Compare Share Share Short Interest Stock AnalysisAnalyst ForecastsChartCompetitorsEarningsFDA EventsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestTrendsBuy This Stock Vaxart Short Interest DataVaxart (VXRT) has a short interest of 7.35 million shares, representing 3.30% of the float (the number of shares available for trading by the public). This marks a -1.57% decrease in short interest from the previous month. The short interest ratio (days to cover) is 8.2, indicating that it would take 8.2 days of the average trading volume of 2.76 million shares to cover all short positions.Current Short Interest7,346,000 sharesPrevious Short Interest7,462,800 sharesChange Vs. Previous Month-1.57%Dollar Volume Sold Short$2.86 millionShort Interest Ratio8.2 Days to CoverLast Record DateAugust 31, 2025Outstanding Shares228,941,000 sharesShort Percent of Float3.30%Today's Trading Volume290,682 sharesAverage Trading Volume2,758,405 sharesToday's Volume Vs. Average11% Short Selling Vaxart? Sign up to receive the latest short interest report for Vaxart and its competitors with MarketBeat's FREE newsletter. Email Address Get Report View SMS TermsBy entering your phone number and clicking the sign-up button, you agree to receive periodic text messages from MarketBeat at the phone number you submitted, including texts that may be sent using an automatic telephone dialing system. Message and data rates may apply. Message frequency will vary. Messages will consist of stock alerts, news stories, and partner advertisements/offers. Consent is not a condition of the purchase of any goods or services. Text HELP for help/customer support. 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Skip Charts & View Short Interest HistoryShort Interest ChartDays to Cover ChartShort Percent of Float ChartVXRT Short Interest Over TimeVXRT Days to Cover Over TimeVXRT Percentage of Float Shorted Over Time Vaxart Short Interest History Export to ExcelReport DateTotal Shares Sold ShortDollar Volume Sold ShortChange from Previous ReportPercentage of Float ShortedDays to CoverPrice on Report Date 8/31/20257,346,000 shares $2.86 million -1.6%3.3%8.2 $0.39 8/15/20257,462,800 shares $2.73 million -7.3%N/A7.1 $0.37 7/31/20258,047,000 shares $2.87 million -8.3%3.6%3.5 $0.36 7/15/20258,770,700 shares $3.27 million -48.3%N/A0.8 $0.37 6/30/2025829,000 shares $374.71 thousand -96.1%0.4%1.4 $0.45 6/15/202521,170,000 shares $14.86 million +44.2%9.5%5.1 $0.70 5/31/202514,680,000 shares $6.41 million +2.3%6.6%8.2 $0.44 5/15/202514,350,000 shares $6.09 million +19.1%6.5%7.1 $0.42 4/30/202512,050,000 shares $5.30 million -8.4%N/A6.4 $0.44 4/15/202513,160,000 shares $4.68 million +1.9%5.9%7.4 $0.36 Get the Latest News and Ratings for VXRT and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Vaxart and its competitors with MarketBeat's FREE daily newsletter. 3/31/202512,920,000 shares $5.30 million +5.6%5.8%6.6 $0.41 3/15/202512,230,000 shares $6.59 million -7.9%5.5%6.1 $0.54 2/28/202513,280,000 shares $6.76 million +17.0%6.0%6.8 $0.51 2/15/202511,350,000 shares $8.47 million +2.2%5.1%6.1 $0.75 1/31/202511,110,000 shares $7.55 million -4.4%N/A6.2 $0.68 1/15/202511,620,000 shares $8.62 million +0.4%N/A6.6 $0.74 12/31/202411,580,000 shares $7.67 million +2.6%N/A6.8 $0.66 12/15/202411,290,000 shares $6.68 million +0.9%N/A8.6 $0.59 11/30/202411,190,000 shares $6.74 million -2.4%N/A8.2 $0.60 11/15/202411,460,000 shares $6.65 million +1.7%N/A8.2 $0.58 10/31/202411,270,000 shares $8.62 million -3.9%N/A6.4 $0.77 10/15/202411,730,000 shares $9.22 million -2.8%N/A6.4 $0.79 9/30/202412,070,000 shares $10.25 million -4.5%N/A6 $0.85 9/15/202412,640,000 shares $12.48 million -0.9%N/A5.5 $0.99 8/31/202412,750,000 shares $11.05 million -5.7%N/A2.8 $0.87 8/15/202413,520,000 shares $10.05 million +11.9%N/A3.1 $0.74 7/31/202412,080,000 shares $8.11 million -2.4%N/A3 $0.67 7/15/202412,380,000 shares $8.38 million -11.2%N/A3.1 $0.68 6/30/202413,940,000 shares $9.30 million -30.3%N/A3.6 $0.67 6/15/202419,996,900 shares $11.45 million +5.8%N/A5.1 $0.57 5/31/202418,910,000 shares $15.41 million +1.7%N/A12.9 $0.82 5/15/202418,600,000 shares $17.57 million +0.7%N/A11.6 $0.94 4/30/202418,470,000 shares $13.20 million +0.7%N/A11.3 $0.71 4/15/202418,340,000 shares $16.67 million +6.7%N/A9.6 $0.91 3/31/202417,190,000 shares $22.35 million +10.1%N/A8.2 $1.30 3/15/202415,610,000 shares $16.86 million +13.9%N/A8 $1.08 2/29/202413,710,000 shares $16.73 million +8.2%N/A7.6 $1.22 2/15/202412,670,000 shares $14.95 million +14.0%N/A7.6 $1.18 1/31/202411,110,000 shares $13.11 million -3.2%N/A7.9 $1.18 1/15/202411,480,000 shares $6.43 million -2.6%N/A11 $0.56 12/31/202311,790,000 shares $6.75 million +4.1%N/A16.4 $0.57 12/15/202311,330,000 shares $7.17 million -3.4%N/A16.8 $0.63 11/30/202311,730,000 shares $8.39 million -6.7%N/A18.2 $0.72 11/15/202312,570,000 shares $10.68 million -11.1%N/A17.8 $0.85 10/31/202314,140,000 shares $9.34 million -13.7%N/A16.7 $0.66 10/15/202316,380,000 shares $10.89 million -3.0%N/A19 $0.67 9/30/202316,880,000 shares $12.73 million +1.7%N/A18.4 $0.75 9/15/202316,600,000 shares $11.76 million +0.8%N/A14.6 $0.71 8/31/202316,470,000 shares $13.55 million -3.1%N/A9.8 $0.82 8/15/202316,990,000 shares $11.85 million -8.7%N/A8.2 $0.70 7/31/202318,610,000 shares $15.23 million +8.3%N/A8.1 $0.82 7/15/202317,190,000 shares $13.24 million -1.0%N/A7.4 $0.77 6/30/202317,370,000 shares $12.68 million -19.8%N/A7.4 $0.73 6/15/202321,660,000 shares $18.89 million +3.4%N/A9.6 $0.87 5/31/202320,950,000 shares $25.56 million +12.0%N/A11.7 $1.22 5/15/202318,710,000 shares $25.63 million -1.3%N/A12.3 $1.37 4/30/202318,960,000 shares $15.42 million -6.9%N/A15.3 $0.81 4/15/202320,370,000 shares $13.38 million +0.9%N/A15.2 $0.66 3/31/202320,180,000 shares $15.27 million -6.7%N/A13.3 $0.76 3/15/202321,630,000 shares $16.44 million -2.3%N/A11.9 $0.76 2/28/202322,140,000 shares $17.26 million +1.5%N/A8.4 $0.78 2/15/202321,810,000 shares $21.31 million -1.0%N/A7.9 $0.98 1/31/202322,030,000 shares $23.79 million -0.9%N/A6.9 $1.08 1/15/202322,240,000 shares $26.02 million -2.3%N/A6.5 $1.17 12/30/202222,760,000 shares $21.87 million -4.0%N/A6.4 $0.96 12/15/202223,710,000 shares $26.32 million -3.0%N/A6.6 $1.11 11/30/202224,440,000 shares $28.84 million -0.8%N/A7.9 $1.18 11/15/202224,640,000 shares $39.18 million +2.5%N/A8.1 $1.59 10/31/202224,030,000 shares $40.13 million -1.9%N/A8.3 $1.67 10/15/202224,500,000 shares $41.65 million -4.0%N/A8.8 $1.70 9/30/202225,510,000 shares $55.61 million +6.3%N/A9.3 $2.18 9/15/202224,000,000 shares $66.24 million +3.8%N/A9.2 $2.76 8/31/202223,130,000 shares $71.70 million -0.3%N/A8.8 $3.10 8/15/202223,200,000 shares $100.92 million -2.8%N/A9 $4.35 7/31/202223,860,000 shares $87.80 million +7.8%N/A8.4 $3.68 7/15/202222,130,000 shares $94.50 million -2.0%N/A7.8 $4.27 6/30/202222,580,000 shares $79.03 million -2.8%N/A8.2 $3.50 6/15/202223,230,000 shares $67.83 million +2.1%N/A8.4 $2.92 5/31/202222,760,000 shares $82.85 million -2.1%N/A8.7 $3.64 5/15/202223,240,000 shares $77.62 million -0.4%N/A8.7 $3.34 4/30/202223,340,000 shares $81.22 million +3.1%N/A9.5 $3.48 4/15/202222,650,000 shares $105.55 million +2.0%N/A9.5 $4.66 3/31/202222,210,000 shares $111.94 million -4.7%N/A8.9 $5.04 3/15/202223,310,000 shares $103.96 million -2.4%N/A8.6 $4.46 2/28/202223,890,000 shares $121.36 million +1.3%N/A8.2 $5.08 2/15/202223,580,000 shares $119.55 million +3.9%N/A7.3 $5.07 1/31/202222,690,000 shares $112.32 million +1.7%N/A6.8 $4.95 1/15/202222,310,000 shares $130.96 million -1.8%N/A6.5 $5.87 12/31/202122,720,000 shares $142.45 million +7.8%N/A6.6 $6.27 12/15/202121,070,000 shares $136.74 million +3.7%N/A5.5 $6.49 11/30/202120,310,000 shares $161.67 million -0.9%N/A5.5 $7.96 11/15/202120,500,000 shares $138.38 million +3.4%N/A6 $6.75 10/29/202119,820,000 shares $132.99 million -7.3%N/A4.9 $6.71 10/15/202121,370,000 shares $148.31 million +13.3%N/A3.6 $6.94 9/30/202118,860,000 shares $149.94 million +16.1%N/A2.9 $7.95 9/15/202116,240,000 shares $133.01 million -6.6%N/A2.3 $8.19 8/31/202117,390,000 shares $155.64 million -14.6%N/A1.8 $8.95 8/13/202120,350,000 shares $176.03 million -4.6%N/A2 $8.65 7/30/202121,330,000 shares $153.36 million -14.2%N/A2.1 $7.19 7/15/202124,860,000 shares $174.52 million +4.8%N/A1.3 $7.02 6/30/202123,720,000 shares $177.66 million -1.8%N/A1.2 $7.49 6/15/202124,150,000 shares $188.61 million +0.9%N/A1.3 $7.81 5/28/202123,930,000 shares $158.42 million -7.2%N/A1.5 $6.62 5/14/202125,780,000 shares $162.41 million +3.7%N/A1.6 $6.30 4/30/202124,850,000 shares $228.87 million -3.0%N/A1.4 $9.21 4/15/202125,610,000 shares $140.34 million +7.2%N/A1.9 $5.48 3/31/202123,890,000 shares $138.32 million -7.4%N/A1.7 $5.79 3/15/202125,800,000 shares $173.89 million -1.3%N/A1.8 $6.74 2/26/202126,130,000 shares $195.98 million -5.0%N/A1.8 $7.50 2/12/202127,510,000 shares $238.24 million -10.3%N/A1.8 $8.66 1/29/202130,670,000 shares $273.58 million -7.7%N/A1.8 $8.92 1/15/202133,240,000 shares $243.98 million -0.9%N/A3.3 $7.34 12/31/202033,550,000 shares $200.63 million +19.8%N/A3.3 $5.98 12/15/202028,000,000 shares $216.02 million -4.1%N/A0 $7.72 11/30/202029,200,000 shares $205.28 million -8.8%N/A1.7 $7.03 10/30/202032,350,000 shares $171.46 million +21.1%N/A1.9 $5.30 10/15/202026,720,000 shares $184.37 million +7.9%N/A1.4 $6.90 9/30/202024,770,000 shares $164.72 million +42.1%N/A1 $6.65 VXRT Short Interest - Frequently Asked Questions What is Vaxart's current short interest? Short interest is the volume of Vaxart shares that have been sold short but have not yet been closed out or covered. As of August 31st, investors have sold 7,346,000 shares of VXRT short. 3.30% of Vaxart's shares are currently sold short. Learn More on Vaxart's current short interest. What is a good short interest ratio for Vaxart? The short interest ratio, also known as the "days to cover ratio", is calculated by dividing the number of shares of a stock sold short divided by its average trading volume. A short interest ratio ranging between 1 and 4 generally indicates strong positive sentiment about a stock and a lack of short sellers. A short interest ratio of 10 or greater indicates strong pessimism about a stock. VXRT shares currently have a short interest ratio of 8.0. Learn More on Vaxart's short interest ratio. Which institutional investors are shorting Vaxart? As of the most recent reporting period, the following institutional investors, funds, and major shareholders have reported short positions of Vaxart: Group One Trading LLC, and Simplex Trading LLC. These positions are disclosed in Form 13F filings with the Securities and Exchange Commission. What is a good short interest percentage for Vaxart? Companies that have a short interest as a percentage of float below 10% indicates positive investor sentiment and few short sellers. Stocks with a short interest percentage above 10% is considered high, suggesting some investors are pessimistic about the stock. Companies with a short interest percentage of 20% or more indicates widespread negative sentiment. 3.30% of Vaxart's floating shares are currently sold short. Is Vaxart's short interest increasing or decreasing? Vaxart saw a decline in short interest in August. As of August 31st, there was short interest totaling 7,346,000 shares, a decline of 1.6% from the previous total of 7,462,800 shares. Changes in short volume can be used to identify positive and negative investor sentiment. Investors that short sell a stock are betting that its price will decline in the future. An increase in short sale volume suggests bearish (negative) sentiment among investors. A decrease on short sale volume suggests bullish (positive) sentiment. How does Vaxart's short interest compare to its competitors? 3.30% of Vaxart's shares are currently sold short. Here is how the short interest of companies in the industry of "pharmaceutical products" compare to Vaxart: Design Therapeutics, Inc. (11.31%), Canopy Growth Corporation (6.82%), CytomX Therapeutics, Inc. (17.51%), Larimar Therapeutics, Inc. (8.10%), Immuneering Corporation (7.02%), 4D Molecular Therapeutics, Inc. (10.18%), Altimmune, Inc. (31.73%), Tvardi Therapeutics, Inc. (11.06%), Tectonic Therapeutic, Inc. (24.46%), Clearside Biomedical, Inc. (2.35%), Which stocks are the most shorted right now? As of the most recent reporting period, the following stocks had the largest short interest positions: SPDR S&P 500 ETF Trust ($73.23 billion), Invesco QQQ ($29.52 billion), iShares Russell 2000 ETF ($20.82 billion), iShares 20+ Year Treasury Bond ETF ($10.76 billion), Palo Alto Networks, Inc. ($9.37 billion), Strategy Inc ($7.58 billion), Invesco S&P 500 Equal Weight ETF ($6.78 billion), SPDR S&P Biotech ETF ($6.72 billion), AppLovin Corporation ($6.37 billion), and iShares iBoxx $ Investment Grade Corporate Bond ETF ($6.29 billion). View all of the most shorted stocks. What does it mean to sell short Vaxart stock? Short selling VXRT is an investing strategy that aims to generate trading profit from Vaxart as its price is falling. VXRT shares are trading up $0.02 today. To short a stock, an investor borrows shares, sells them and buys the shares back on the public market later to return it to the lender. Short sellers are betting that a stock will decline in price. If the stock does drop after selling, the short seller buys it back at a lower price and returns it to the lender. The difference between the sell price and the buy price is the trader's profit. How does a short squeeze work against Vaxart? A short squeeze for Vaxart occurs when it has a large amount of short interest and its stock appreciates in price. This forces short sellers to cover their short interest positions by buying actual shares of VXRT, which in turn drives the price of the stock up even further. How often is Vaxart's short interest reported? Short interest is typically published by a stock exchange once per month. However, NASDAQ publishes a report for U.S. stocks, including VXRT, twice per month. The most recent reporting period available is August, 31 2025. More Short Interest Resources from MarketBeat Related Companies DSGN Short Interest CGC Short Interest CTMX Short Interest LRMR Short Interest IMRX Short Interest FDMT Short Interest ALT Short Interest TVRD Short Interest TECX Short Interest CLSD Short Interest Short Interest Tools Stocks to Short Largest Short Interest Positions Short Interest Increases Short Interest Decreases Short Interest Reporting Dates This page (NASDAQ:VXRT) was last updated on 9/16/2025 by MarketBeat.com Staff From Our PartnersFanatics Hit $31B-Is This Nasdaq Next?Fanatics built an empire by owning the fan experience-scaling to a $31B valuation. 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